Multiple select in a asp.net datagrid

[Erik]

I'm trying to create a asp.net webform with a datagrid which has been
filled with data from a database. The datagrid is filled allright but
I would like to add a checkbox at every row which the use can click to
select one or many of the rows in the datagrid once a button is
clicked. The problem is that the code behind does not recognise if the
checkbox has been check or not.

Does anyone knows how to do this?
/erik

The html code looks like this:

<asp:DataGrid id="dgListAllOr ders" runat="server"
AutoGenerateCol umns="False" Font-Names="Arial" CellPadding="0"
BorderWidth="1p x" Font-Size="X-Small" DataKeyField="J obID">
<AlternatingIte mStyle BackColor="Whit eSmoke"></AlternatingItem Style>
<HeaderStyle Font-Bold="True" Wrap="False"
BackColor="Gain sboro"></HeaderStyle>
<Columns><asp:B oundColumn DataField="JobI D" HeaderText="Job bID">
<HeaderStyle Width="50px"></HeaderStyle>
</asp:BoundColumn >
<asp:TemplateCo lumn>
<ItemTemplate >
<asp:CheckBox id="chkJob" runat="server"
Checked="False" ></asp:CheckBox>
</ItemTemplate>
</asp:TemplateCol umn>
</Columns>
</asp:DataGrid>

The code behind looks like this:

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
Dim dgi As DataGridItem
Dim cb As CheckBox
Dim i As Integer = 0
Dim p As Integer

For Each dgi In dgListAllOrders .Items
cb = CType(dgi.Cells (6).Controls(1) , CheckBox)
If cb.Checked Then
p = CType(dgListAll Orders.DataKeys (i), Integer)
End If
i += 1
Next

End Sub